@inproceedings{SIGMOD-2013-YangWQWL,
	author        = "Xiaochun Yang and Bin Wang and Tao Qiu and Yaoshu Wang and Chen Li",
	booktitle     = "{Proceedings of the 31st ACM SIGMOD International Conference on Management of Data}",
	doi           = "10.1145/2463676.2465289",
	isbn          = "978-1-4503-2037-5",
	pages         = "361--372",
	publisher     = "{ACM}",
	title         = "{Improving regular-expression matching on strings using negative factors}",
	year          = 2013,
}